Very nice! The rainbow hopper didn't carry grain, but certainly looks nice. I read that the chemical formula on the side of this hopper is for Hexamethylene diisocyanate, used to produce a polymer when combined with butanediol, which is a crystal. The product is used in the production of plastics. Hexamethylene diisocyanate is also used in the production of enamel paints and gives it that hard shiny surface for a more durable finish and is used in automotive and aircraft paint. So in the car the product is combined with another to produce a compound used in the plastics industry.
A long way from grain, but no doubt most folks wouldn't notice anyway. A bit of trivia, but interesting. Anyway, it's a great looking consist.